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author Alex Light <allight@google.com> 2018-02-21 13:37:17 -0800
committer Alex Light <allight@google.com> 2018-02-21 22:42:13 +0000
commitb69d2d3c3af7a7a62efb38d04dec878ea9b0b43c (patch)
tree4220e5b7475b5c53b19609ef46d1d081bf8357cb /tools/generate_operator_out.py
parentc758875461cca47d1b342c3c56a218a704b04365 (diff)
Remove generate-operator-out.py symlinks
Rewrite the operator out step to use a python_host_binary instead. Test: mma -j50 Change-Id: I1503ad9851bf6d7bae8964f7cb91ba7f19b660ca
Diffstat (limited to 'tools/generate_operator_out.py')
-rwxr-xr-xtools/generate_operator_out.py210
1 files changed, 210 insertions, 0 deletions
diff --git a/tools/generate_operator_out.py b/tools/generate_operator_out.py
new file mode 100755
index 0000000000..3bd62fe1db
--- /dev/null
+++ b/tools/generate_operator_out.py
@@ -0,0 +1,210 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2012 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Generates default implementations of operator<< for enum types."""
+
+import codecs
+import os
+import re
+import string
+import sys
+
+
+_ENUM_START_RE = re.compile(r'\benum\b\s+(class\s+)?(\S+)\s+:?.*\{(\s+// private)?')
+_ENUM_VALUE_RE = re.compile(r'([A-Za-z0-9_]+)(.*)')
+_ENUM_END_RE = re.compile(r'^\s*\};$')
+_ENUMS = {}
+_NAMESPACES = {}
+_ENUM_CLASSES = {}
+
+def Confused(filename, line_number, line):
+ sys.stderr.write('%s:%d: confused by:\n%s\n' % (filename, line_number, line))
+ raise Exception("giving up!")
+ sys.exit(1)
+
+
+def ProcessFile(filename):
+ lines = codecs.open(filename, 'r', 'utf8', 'replace').read().split('\n')
+ in_enum = False
+ is_enum_private = False
+ is_enum_class = False
+ line_number = 0
+
+
+ namespaces = []
+ enclosing_classes = []
+
+ for raw_line in lines:
+ line_number += 1
+
+ if not in_enum:
+ # Is this the start of a new enum?
+ m = _ENUM_START_RE.search(raw_line)
+ if m:
+ # Yes, so add an empty entry to _ENUMS for this enum.
+
+ # Except when it's private
+ if m.group(3) is not None:
+ is_enum_private = True
+ else:
+ is_enum_private = False
+ is_enum_class = m.group(1) is not None
+ enum_name = m.group(2)
+ if len(enclosing_classes) > 0:
+ enum_name = '::'.join(enclosing_classes) + '::' + enum_name
+ _ENUMS[enum_name] = []
+ _NAMESPACES[enum_name] = '::'.join(namespaces)
+ _ENUM_CLASSES[enum_name] = is_enum_class
+ in_enum = True
+ continue
+
+ # Is this the start or end of a namespace?
+ m = re.compile(r'^namespace (\S+) \{').search(raw_line)
+ if m:
+ namespaces.append(m.group(1))
+ continue
+ m = re.compile(r'^\}\s+// namespace').search(raw_line)
+ if m:
+ namespaces = namespaces[0:len(namespaces) - 1]
+ continue
+
+ # Is this the start or end of an enclosing class or struct?
+ m = re.compile(r'^\s*(?:class|struct)(?: MANAGED)?(?: PACKED\([0-9]\))? (\S+).* \{').search(raw_line)
+ if m:
+ enclosing_classes.append(m.group(1))
+ continue
+
+ # End of class/struct -- be careful not to match "do { ... } while" constructs by accident
+ m = re.compile(r'^\s*\}(\s+)?(while)?(.+)?;').search(raw_line)
+ if m and not m.group(2):
+ enclosing_classes = enclosing_classes[0:len(enclosing_classes) - 1]
+ continue
+
+ continue
+
+ # Is this the end of the current enum?
+ m = _ENUM_END_RE.search(raw_line)
+ if m:
+ if not in_enum:
+ Confused(filename, line_number, raw_line)
+ in_enum = False
+ continue
+
+ if is_enum_private:
+ continue
+
+ # The only useful thing in comments is the <<alternate text>> syntax for
+ # overriding the default enum value names. Pull that out...
+ enum_text = None
+ m_comment = re.compile(r'// <<(.*?)>>').search(raw_line)
+ if m_comment:
+ enum_text = m_comment.group(1)
+ # ...and then strip // comments.
+ line = re.sub(r'//.*', '', raw_line)
+
+ # Strip whitespace.
+ line = line.strip()
+
+ # Skip blank lines.
+ if len(line) == 0:
+ continue
+
+ # Since we know we're in an enum type, and we're not looking at a comment
+ # or a blank line, this line should be the next enum value...
+ m = _ENUM_VALUE_RE.search(line)
+ if not m:
+ Confused(filename, line_number, raw_line)
+ enum_value = m.group(1)
+
+ # By default, we turn "kSomeValue" into "SomeValue".
+ if enum_text == None:
+ enum_text = enum_value
+ if enum_text.startswith('k'):
+ enum_text = enum_text[1:]
+
+ # Lose literal values because we don't care; turn "= 123, // blah" into ", // blah".
+ rest = m.group(2).strip()
+ m_literal = re.compile(r'= (0x[0-9a-f]+|-?[0-9]+|\'.\')').search(rest)
+ if m_literal:
+ rest = rest[(len(m_literal.group(0))):]
+
+ # With "kSomeValue = kOtherValue," we take the original and skip later synonyms.
+ # TODO: check that the rhs is actually an existing value.
+ if rest.startswith('= k'):
+ continue
+
+ # Remove any trailing comma and whitespace
+ if rest.startswith(','):
+ rest = rest[1:]
+ rest = rest.strip()
+
+ # There shouldn't be anything left.
+ if len(rest):
+ sys.stderr.write('%s\n' % (rest))
+ Confused(filename, line_number, raw_line)
+
+ # If the enum is scoped, we must prefix enum value with enum name (which is already prefixed
+ # by enclosing classes).
+ if is_enum_class:
+ enum_value = enum_name + '::' + enum_value
+ else:
+ if len(enclosing_classes) > 0:
+ enum_value = '::'.join(enclosing_classes) + '::' + enum_value
+
+ _ENUMS[enum_name].append((enum_value, enum_text))
+
+def main():
+ local_path = sys.argv[1]
+ header_files = []
+ for header_file in sys.argv[2:]:
+ header_files.append(header_file)
+ ProcessFile(header_file)
+
+ print('#include <iostream>')
+ print('')
+
+ for header_file in header_files:
+ header_file = header_file.replace(local_path + '/', '')
+ print('#include "%s"' % header_file)
+
+ print('')
+
+ for enum_name in _ENUMS:
+ print('// This was automatically generated by %s --- do not edit!' % sys.argv[0])
+
+ namespaces = _NAMESPACES[enum_name].split('::')
+ for namespace in namespaces:
+ print('namespace %s {' % namespace)
+
+ print('std::ostream& operator<<(std::ostream& os, const %s& rhs) {' % enum_name)
+ print(' switch (rhs) {')
+ for (enum_value, enum_text) in _ENUMS[enum_name]:
+ print(' case %s: os << "%s"; break;' % (enum_value, enum_text))
+ if not _ENUM_CLASSES[enum_name]:
+ print(' default: os << "%s[" << static_cast<int>(rhs) << "]"; break;' % enum_name)
+ print(' }')
+ print(' return os;')
+ print('}')
+
+ for namespace in reversed(namespaces):
+ print('} // namespace %s' % namespace)
+ print('')
+
+ sys.exit(0)
+
+
+if __name__ == '__main__':
+ main()